How to setup Sensics xSight HMD displays in Vizard

[Zhi]

When I press F4, the RF is 59.xx which is about right.

The master machine has two NVIDIA GeForce GTX 275 video cards (in "SLI-Activate all displays" mode). The slave machine has two NVIDIA GeForce GTX 9800 video cards (also in "SLI-Activate all displays" mode).

The scene I am using is pretty simple, it is the panorama scene.
panorama = viz.add('panorama.ive')

When I display the images to a LCD monitor, most of the time, all the screens (only 2 full panels can be seen, other 4 panels are partly blocked because the monitor resolution is 1680x1024, while the virtual screen is 2400x1200) look fine. When I rotate the HMD, the images on the monitor seems pretty good (no obvious breaks). But, occasionally, I still can notice some breaks in one or two of the panel images. In contrast, when look into the HMD, the breaks of the image is obvious (seen as moving lines from top to bottom across the screens) when rotating head abruptly.

That's really weird